Based on the true story of coal miners who became trapped underground in a cave-in on Christmas Eve, 1951.
Baseado em uma história verídica onde mineiros de carvão ficaram subterrâneo presos em uma caverna na véspera do Natal de 1951.
Gebaseerd op het waargebeurde verhaal van mijnwerkers die op kerstavond 1951 ondergronds vast kwamen te zitten in een instorting.